S
M
T
W
T
F
S
26
90°
59°
27
88°
60°
28
90°
62°
29
92°
62°
30
94°
63°
31
93°
61°
1
92°
62°
2
90°
66°
3
93°
64°
4
94°
63°
5
94°
62°
6
92°
58°
7
88°
58°
8
86°
59°
9
88°
59°
10
89°
61°
11
92°
62°
12
93°
61°
13
94°
62°
14
93°
65°
15
94°
59°
16
91°
57°
17
85°
58°
18
87°
60°
19
89°
62°
20
94°
60°
21
91°
59°
22
90°
64°
23
93°
63°
24
94°
61°
25
92°
61°
26
87°
63°
27
89°
61°
28
91°
62°
29
91°
63°
30
92°
59°
31
91°
60°
1
86°
52°
2
83°
57°
3
89°
59°
4
90°
61°
5
90°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lamar
Lamar's August 2026 forecast shows daily high temperatures ranging from 83° to 94°, with overnight lows between 52° and 66°. The average high for August is 91° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Lamar. See also: September | October | November.